204206430 has 24 divisors (see below), whose sum is σ = 490283352. Its totient is φ = 54434176.

The previous prime is 204206423. The next prime is 204206447. The reversal of 204206430 is 34602402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204206397 and 204206406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76966 + ... + 79574.

It is an arithmetic number, because the mean of its divisors is an integer number (20428473).

Almost surely, 2^204206430 is an apocalyptic number.

204206430 is an abundant number, since it is smaller than the sum of its proper divisors (286076922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204206430 is an frugal number, since it uses more digits than its factorization.

204206430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228 (or 2619 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 204206430 is about 14290.0815253098. The cubic root of 204206430 is about 588.8750276526.

Adding to 204206430 its reverse (34602402), we get a palindrome (238808832).

It can be divided in two parts, 20 and 4206430, that added together give a triangular number (4206450 = T₂₉₀₀).

The spelling of 204206430 in words is "two hundred four million, two hundred six thousand, four hundred thirty".